Electroweak baryogenesis in the MSSM with vector-like superfields

Abstract

Introducing heavy particles with strong couplings to the Higgs field can strengthen electroweak phase transition, through the entropy release mechanism from both bosons and fermions. We analyze the possibility of electroweak baryogenesis in the MSSM with new vector-like superfields. The new vector-like particles belong to the representation 5+5bar+10+10bar of SU(5). By analyzing in detail the effective potential at finite temperature, we show that a strongly first order electroweak phase transition in this model is ruled out by a combination of 125 GeV Higgs requirement, the bound for exotic quarks, the gluon fusion Higgs production rate and the Higgs diphoton decay rate as well as the electroweak precision measurement.

21 pages, 3 figures and 1 table. Published by PRD

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• New Insights of Electroweak Phase Transition in NMSSM
• Semi-analytic techniques for calculating bubble wall profiles
• Dark Matter in the Higgs Triplet Model
• MSSM4G: Reviving Bino Dark Matter with Vector-like 4th Generation Particles
• The Analytical One-Loop Contributions to Higgs Boson Mass in the Supersymmetric Standard Model with Vector-like Particles